pKa's

Question 1

CH4, CH3-

Answer 1

• methane
• pKa: 50

Question 2

H2C=CH2, H2C=CH-

Answer 2

• ethylene
• pKa: 44

Question 3

NH3, H2N-

Answer 3

• ammonia
• pKa: 36

Question 4

H2C2, HC2-

Answer 4

• acetylene
• pKa: 25

Question 5

H2, H-

Answer 5

• hydrogen 2
• pKa: 35

Question 6

COH4, COH3-

Answer 6

• alcohol
• pKa: 18

Question 7

R-OH, R-O-

Answer 7

• hydroxyl group
• pKa: 16-18

Question 8

H2O, OH-

Answer 8

• water
• pKa: 15.7

Question 9

C6H6O, C6H5O-

Answer 9

• phenol
• pKa: 10

Question 10

NH4+, NH3

Answer 10

• ammonium ion
• pKa: 9.4

Question 11

HNC, NC-

Answer 11

• hydrogen cyanide
• pKa: 9.1

Question 12

C2O2H2, C2HO2-

Answer 12

• carboxyl group
• pKa: 4.8

Question 13

HF, F-

Answer 13

• hydrogen flouride
• pKa: 3.2

Question 14

H3O+, H2O

Answer 14

• hydronium
• pKa: -1.74

Question 15

HCl, Cl-

Answer 15

• hydrochloric acid
• pKa: -7

Question 16

H2SO4, HSO4-

Answer 16

• sulfuric acid
• pKa: -9

Question 17

HBr, Br-

Answer 17

• hydrogen bromide
• pKa: -9

Question 18

HI, I-

Answer 18

• hydrogen iodide
• pKa: -10